Fresh air duct for a kitchen exhaust system



FIG. 1 is a front elevational view of a fresh air duct for a kitchen exhaust system.

FIG. 2 is a right side elevational view thereof, the left side being a mirror image of the right side shown.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a top plan view thereof, it being understood that the apertures are continuous throughout the area shown; and

FIG. 5 is a bottom view thereof.

The broken line representation of support brackets in FIGS. 1, 2, 3 and 5 are for purposes of illustration only and form no part of the claimed design. 

The ornamental design for a fresh air duct for a kitchen exhaust system, as shown and described. 